Total Parenteral Nutrition (TPN) is a medical treatment that provides essential nutrients directly into the bloodstream. This method is used for patients who cannot eat or absorb food through their digestive system due to various medical conditions, such as gastrointestinal disorders or cancer. TPN typically includes a mixture of carbohydrates, proteins, fats, vitamins, and minerals. It is administered through a central venous catheter, allowing for a concentrated nutrient solution to be delivered safely and effectively. Regular monitoring is essential to ensure the patient's nutritional needs are met and to prevent complications.